论文部分内容阅读
作为供电保护神的UPS,应当有很高的可靠性。UPS,尤其是中等容量以上的机器,其结构非常复杂。当然,作为指挥中心的控制电路,首先就具备很高的可靠性,不过由于这都是一些低压小信号电路,作一些冗余措施并不困难,而且造价的提高极小,比如四与非门、四比较器、四运算放大器等等、在设计中只用其中的三个或者一半,用其余的一个或两个作为备用是轻而易举的事。在用微处理器的电器中,这种冗余也并不增加多少费用,加之小信号电路功耗小、温升低,相对而言不容易出故障(当然元器件本身质量不高是另一回事)。
As a power protection God UPS, there should be a high degree of reliability. UPS, especially machines of medium capacity and above, have a very complicated structure. Of course, as the command center control circuit, first of all, with high reliability, but because these are some low-voltage small signal circuit, for some redundancy measures is not difficult, and minimal increase in cost, such as four and non-gate , Quadruple comparators, quad op amps, etc. It is a breeze to use only one or two of them in the design, with only one or two of them in the design. In the use of microprocessor electronics, this redundancy does not increase the cost, coupled with small signal power consumption, low temperature rise, relatively easy to fail (of course, the quality of components itself is not high is another Going back).